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Paper Abstract and Keywords
Presentation 2016-07-21 13:50
Expansion of Electromagnetic Field and Near-Field Gain in Lossy Homogeneous Medium
Nozomu Ishii (Niigata Univ.), Lira Hamada, Chakarothai Jerdvisanop, Kanako Wake, Soichi Watanabe (NICT) AP2016-49
Abstract (in Japanese) (See Japanese page) 
(in English) To evaluate SAR of RF devices operated in MHz band, the authors have studied a technique that uses near-field gain of reference antenna in the liquid. In this report, to clarify the distance property of the near-field gain, we formulate an asymptotic power series expansion of the near-field gain in terms of the inverse of the distance from the antenna, we asymptotically expand this series in terms of the inverse of the distance of the amplitude center of the antenna by using Panicali's method, and we find the distance property of the near-field gain which was derived by Dr. Hirose. To check the expansion theorem, which ensures the asymptotic power series expansion of the fields in the homogeneous lossy medium, a rigorous expression of the fields proposed by the current distribution can be derived by using the Fresnel approximation.
Keyword (in Japanese) (See Japanese page) 
(in English) near-field gain / amplitude center / Friis transmission formula / asymptotic power series expansion / homogeneous lossy medium / SAR evaluation / probe calibration /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 142, AP2016-49, pp. 73-78, July 2016.
Paper # AP2016-49 
Date of Issue 2016-07-13 (AP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF AP2016-49

Conference Information
Committee AP SAT SANE  
Conference Date 2016-07-20 - 2016-07-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Otaru port marina 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Remote sensing, Radio propagation, Antennas and Propagation, Sattelite Communication 
Paper Information
Registration To AP 
Conference Code 2016-07-AP-SAT-SANE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Expansion of Electromagnetic Field and Near-Field Gain in Lossy Homogeneous Medium 
Sub Title (in English)  
Keyword(1) near-field gain  
Keyword(2) amplitude center  
Keyword(3) Friis transmission formula  
Keyword(4) asymptotic power series expansion  
Keyword(5) homogeneous lossy medium  
Keyword(6) SAR evaluation  
Keyword(7) probe calibration  
Keyword(8)  
1st Author's Name Nozomu Ishii  
1st Author's Affiliation Niigata University (Niigata Univ.)
2nd Author's Name Lira Hamada  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Chakarothai Jerdvisanop  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
4th Author's Name Kanako Wake  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
5th Author's Name Soichi Watanabe  
5th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2016-07-21 13:50:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2016-49 
Volume (vol) vol.116 
Number (no) no.142 
Page pp.73-78 
#Pages 6 
Date of Issue 2016-07-13 (AP) 

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